Antiskidding device.



PATENTE-D AUG. 13, 1907.

NOV. 863,331. I V

E. B. STIMPSON.

ANTISKIDDING DEVICE.

APPLICATION FILED DBO. 27, 1906.

- (544m; 03% ivwonlo:

351 GH OZIIClJ EDWIN BALL STIMPSON, OF NEW YORK, N. Y.

ANTISKIDDING DEVICE.

Specification of Letters Patent.

Patented. Aug. 13, 1907.

Application filed December 27,1906- Sei'isl No. 349,610.

To all whom it may concern:

Be it known that I, EDWIN BALL Srnursox, a citizen of the United States, residing in the borough of Brook lyn, county of Kings, city and State 0 1 New York, have invented certain new and useful Improvements in Antiskidding Devices, of which theiollowing is a speci-' lication. I

This invention relates to anti-skidding metal devices of the class commonly employed in or on tires for auto-vehicles; and the purpose of the invention is to provide a device consisting of a nest ofwesring devices of hard rnetolpr'eierably hard.steeleech hav-.

ing a. trough-like form and the inner one fitting loosely into the outer, and astud or studs for. securing the said wearing devices to the material, said stud having a head which rests Within the inner trough, and a shank which pesses through holes in the bottom of the troughs.

This device serves not alone as an enti-skidder but as a protector and a braking. I i In the accompanying drawing, which illustrates an embodiment of the inventionFigure 1 is a perspective view of the double-trough wearing device. Fig. 2 is a plan of the same showing the holes for the shanks of the securing studs. Fig. 3 is an end-view, showing the device secured to the material. Fig. 4 is 2, longitudinal section of the device as seen in Fig. 3. Fig. 5 shows a cross-section and plan of a form of the device where the riveting shank of the stud is integral with the inner trough; and Fig. 6 shows 9. globular headed, split rivet employed as the securing means.

' troughs will preferably be about even at their upper I edges; will have holes 0 in their bottoms (Fig. 2) to receive the securing dcices, and will be of hard steel,

means for preventing slipping in.

so as to resist wear and bending and maintain relatively sharp upper margins so that the device may have a plurelity oisharp edges to bite into the roadway. By loosely nesting, as applied to the troughs, is meant that the upright flanges of the inner troughs are seperated by 9. space from the adjacent flanges of the outer troughs. This produces the plurality of sharp edges referred to above.

In Figs. 3 and 4 the securing studs are shown its set and riveted in the material M. Each stud has a head (I, which rests and bears on thcbottom of the inner trough and its shank, e extends through the holes 0, the material M, a. washer f at the back of the letter, and is then riveted down on the said washer.

Fig. 5 shows a. construction wherein the stud has its shank e formed integrally with the inner trough a. In this case the trough itself forms the head oi the stud. In this case also if the inner trough is to be hardened, the shank e should have its temper drawn so as to give it sufficient malleability to rivet down or clench.

Figs. 6 and 7 show split rivets or rivets with slitted shanks for clenching, and Fig. 7 shows the outer trough having slightly inclined and flaring sid cs.

Having thus described my invention, I claim- 1. A device for the purpose specified, having a plurality of nested, trough-like wearing devices, of hard metal, the upright flanges of the same being separated as set forth, and means for securlngthem to a material or fabric.

2. A device for the purpose specified, comprlslng a pm rallity of loosely nested, trough-llke wearing devices with registering apertures in their bottoms, said wearing devlces being of hard steel with upturned and separated margins, and headed rivets for securing the said nested devices.

In witness whereof I have hereunto signed my name this 24th dayv of Dec. 1906, in the presence of two subscribing witnesses.

EDWIN BALL STIMPSON.

Witnesses:

. H. G. Hosn,

WILL-mi: J. FIRTH. 

